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The search for extraterrestrial intelligence
Nature, 2001As far as we know, humanity is alone in the Universe: there is no definite evidence for the existence of extraterrestrial life, let alone extraterrestrial civilizations (ETCs) capable of communicating or travelling over interstellar distances. Yet popular speculation about the existence of ETCs abounds, including reports of alien visitations either now
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The Search for Extraterrestrial Intelligence
2023Abstract This chapter discusses the search for extraterrestrial intelligence (SETI). Sagan’s Principle of Mediocrity claims that just as the Earth was not special (not at the center of the universe), humans are also average, and thus there should be many other intelligent species in the universe.
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The recognition of extraterrestrial intelligence
Proceedings of the Royal Society of London. Series B. Biological Sciences, 1975Abstract A necessary but not sufficient condition for the recognition of extra-terrestrial intelligence is a significant departure from thermodynamic equilibrium. This can be discerned clearly in the inverse problem of the detection of terrestrial intelligence from a distance. Photography of the Earth in reflected sunlight reveals no
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Chasing Extraterrestrial Intelligence
Current History, 2023The search for intelligent life elsewhere in the universe has continued for decades without yielding any tangible results, as experts debate active versus passive approaches and the risks involved in sending signals of humans’ presence.
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Tsiolkovsky and extraterrestrial intelligence
Acta Astronautica, 2000Abstract Where is everybody? Fermi’s famous question about the apparent absence of evidence of extraterrestrials and the answers to it offered by Ball, Kuiper and Morris during the search for extraterrestrial intelligence (SETI) debates of the 1970s were anticipated in the writings of the pioneering Russian space theorist Konstantin Tsiolkovsky ...
B Finney, V Lytkin, L Finney
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The Quest for Extraterrestrial Intelligence
2020The constant depictions of contact with extraterrestrial life and their constant basic presence in science fiction shows the deep human desire for connection and transcendence with other life forms. In reality, continuous efforts on the search for aliens are being made by renown not-for-profit research organization such as the Search for ...
Hui Chieh Teoh, Katrina Pui Yee Shak
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Do Extraterrestrials Have Sex (and Intelligence)?
Annals of the New York Academy of Sciences, 2000Abstract:This thought experiment addresses the range of possible evolved psychologies likely to be associated with extraterrestrial (ET) intelligence. The analysis rests on: (1) a number of assumptions shared by the SETI project; (2) recent arguments concerning convergent evolution; and (3) current theories of how intelligence evolved in our own ...
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Pros and cons in the search for extraterrestrial intelligence
Medical Hypotheses, 1996I propose a new term, 'galactic organism with distinct intelligence', for the extraterrestrial forms, with which humans can make contact. This is because, among the three existing terms: (a) 'the search for extraterrestrial intelligence' 'excludes biology and is inelegant'; (b) 'extraterrestrial' does not distinguish between the micro-organisms and ...
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